Never embark on what comes after without having mastered what goes before. 如未掌握好已学过的东西，切莫从事更深的学习。

小贴士:欢迎访问谚语大全，在这里你可以方便地找到搞笑谚语Never embark on what comes after without having mastered what goes before. 如未掌握好已学过的东西，切莫从事更深的学习。 这一搞笑谚语，并且查看Never embark on what comes after without having mastered what goes before. 如未掌握好已学过的东西，切莫从事更深的学习。 这一搞笑谚语的解释。